1 //===- llvm/BinaryFormat/ELF.h - ELF constants and structures ---*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This header contains common, non-processor-specific data structures and 10 // constants for the ELF file format. 11 // 12 // The details of the ELF32 bits in this file are largely based on the Tool 13 // Interface Standard (TIS) Executable and Linking Format (ELF) Specification 14 // Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format 15 // Version 1.5, Draft 2, May 1998 as well as OpenBSD header files. 16 // 17 //===----------------------------------------------------------------------===// 18 19 #ifndef LLVM_BINARYFORMAT_ELF_H 20 #define LLVM_BINARYFORMAT_ELF_H 21 22 #include <cstdint> 23 #include <cstring> 24 25 namespace llvm { 26 namespace ELF { 27 28 using Elf32_Addr = uint32_t; // Program address 29 using Elf32_Off = uint32_t; // File offset 30 using Elf32_Half = uint16_t; 31 using Elf32_Word = uint32_t; 32 using Elf32_Sword = int32_t; 33 34 using Elf64_Addr = uint64_t; 35 using Elf64_Off = uint64_t; 36 using Elf64_Half = uint16_t; 37 using Elf64_Word = uint32_t; 38 using Elf64_Sword = int32_t; 39 using Elf64_Xword = uint64_t; 40 using Elf64_Sxword = int64_t; 41 42 // Object file magic string. 43 static const char ElfMagic[] = {0x7f, 'E', 'L', 'F', '\0'}; 44 45 // e_ident size and indices. 46 enum { 47 EI_MAG0 = 0, // File identification index. 48 EI_MAG1 = 1, // File identification index. 49 EI_MAG2 = 2, // File identification index. 50 EI_MAG3 = 3, // File identification index. 51 EI_CLASS = 4, // File class. 52 EI_DATA = 5, // Data encoding. 53 EI_VERSION = 6, // File version. 54 EI_OSABI = 7, // OS/ABI identification. 55 EI_ABIVERSION = 8, // ABI version. 56 EI_PAD = 9, // Start of padding bytes. 57 EI_NIDENT = 16 // Number of bytes in e_ident. 58 }; 59 60 struct Elf32_Ehdr { 61 unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes 62 Elf32_Half e_type; // Type of file (see ET_* below) 63 Elf32_Half e_machine; // Required architecture for this file (see EM_*) 64 Elf32_Word e_version; // Must be equal to 1 65 Elf32_Addr e_entry; // Address to jump to in order to start program 66 Elf32_Off e_phoff; // Program header table's file offset, in bytes 67 Elf32_Off e_shoff; // Section header table's file offset, in bytes 68 Elf32_Word e_flags; // Processor-specific flags 69 Elf32_Half e_ehsize; // Size of ELF header, in bytes 70 Elf32_Half e_phentsize; // Size of an entry in the program header table 71 Elf32_Half e_phnum; // Number of entries in the program header table 72 Elf32_Half e_shentsize; // Size of an entry in the section header table 73 Elf32_Half e_shnum; // Number of entries in the section header table 74 Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table 75 76 bool checkMagic() const { 77 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 78 } 79 80 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 81 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 82 }; 83 84 // 64-bit ELF header. Fields are the same as for ELF32, but with different 85 // types (see above). 86 struct Elf64_Ehdr { 87 unsigned char e_ident[EI_NIDENT]; 88 Elf64_Half e_type; 89 Elf64_Half e_machine; 90 Elf64_Word e_version; 91 Elf64_Addr e_entry; 92 Elf64_Off e_phoff; 93 Elf64_Off e_shoff; 94 Elf64_Word e_flags; 95 Elf64_Half e_ehsize; 96 Elf64_Half e_phentsize; 97 Elf64_Half e_phnum; 98 Elf64_Half e_shentsize; 99 Elf64_Half e_shnum; 100 Elf64_Half e_shstrndx; 101 102 bool checkMagic() const { 103 return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 104 } 105 106 unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 107 unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 108 }; 109 110 // File types 111 enum { 112 ET_NONE = 0, // No file type 113 ET_REL = 1, // Relocatable file 114 ET_EXEC = 2, // Executable file 115 ET_DYN = 3, // Shared object file 116 ET_CORE = 4, // Core file 117 ET_LOPROC = 0xff00, // Beginning of processor-specific codes 118 ET_HIPROC = 0xffff // Processor-specific 119 }; 120 121 // Versioning 122 enum { EV_NONE = 0, EV_CURRENT = 1 }; 123 124 // Machine architectures 125 // See current registered ELF machine architectures at: 126 // http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html 127 enum { 128 EM_NONE = 0, // No machine 129 EM_M32 = 1, // AT&T WE 32100 130 EM_SPARC = 2, // SPARC 131 EM_386 = 3, // Intel 386 132 EM_68K = 4, // Motorola 68000 133 EM_88K = 5, // Motorola 88000 134 EM_IAMCU = 6, // Intel MCU 135 EM_860 = 7, // Intel 80860 136 EM_MIPS = 8, // MIPS R3000 137 EM_S370 = 9, // IBM System/370 138 EM_MIPS_RS3_LE = 10, // MIPS RS3000 Little-endian 139 EM_PARISC = 15, // Hewlett-Packard PA-RISC 140 EM_VPP500 = 17, // Fujitsu VPP500 141 EM_SPARC32PLUS = 18, // Enhanced instruction set SPARC 142 EM_960 = 19, // Intel 80960 143 EM_PPC = 20, // PowerPC 144 EM_PPC64 = 21, // PowerPC64 145 EM_S390 = 22, // IBM System/390 146 EM_SPU = 23, // IBM SPU/SPC 147 EM_V800 = 36, // NEC V800 148 EM_FR20 = 37, // Fujitsu FR20 149 EM_RH32 = 38, // TRW RH-32 150 EM_RCE = 39, // Motorola RCE 151 EM_ARM = 40, // ARM 152 EM_ALPHA = 41, // DEC Alpha 153 EM_SH = 42, // Hitachi SH 154 EM_SPARCV9 = 43, // SPARC V9 155 EM_TRICORE = 44, // Siemens TriCore 156 EM_ARC = 45, // Argonaut RISC Core 157 EM_H8_300 = 46, // Hitachi H8/300 158 EM_H8_300H = 47, // Hitachi H8/300H 159 EM_H8S = 48, // Hitachi H8S 160 EM_H8_500 = 49, // Hitachi H8/500 161 EM_IA_64 = 50, // Intel IA-64 processor architecture 162 EM_MIPS_X = 51, // Stanford MIPS-X 163 EM_COLDFIRE = 52, // Motorola ColdFire 164 EM_68HC12 = 53, // Motorola M68HC12 165 EM_MMA = 54, // Fujitsu MMA Multimedia Accelerator 166 EM_PCP = 55, // Siemens PCP 167 EM_NCPU = 56, // Sony nCPU embedded RISC processor 168 EM_NDR1 = 57, // Denso NDR1 microprocessor 169 EM_STARCORE = 58, // Motorola Star*Core processor 170 EM_ME16 = 59, // Toyota ME16 processor 171 EM_ST100 = 60, // STMicroelectronics ST100 processor 172 EM_TINYJ = 61, // Advanced Logic Corp. TinyJ embedded processor family 173 EM_X86_64 = 62, // AMD x86-64 architecture 174 EM_PDSP = 63, // Sony DSP Processor 175 EM_PDP10 = 64, // Digital Equipment Corp. PDP-10 176 EM_PDP11 = 65, // Digital Equipment Corp. PDP-11 177 EM_FX66 = 66, // Siemens FX66 microcontroller 178 EM_ST9PLUS = 67, // STMicroelectronics ST9+ 8/16 bit microcontroller 179 EM_ST7 = 68, // STMicroelectronics ST7 8-bit microcontroller 180 EM_68HC16 = 69, // Motorola MC68HC16 Microcontroller 181 EM_68HC11 = 70, // Motorola MC68HC11 Microcontroller 182 EM_68HC08 = 71, // Motorola MC68HC08 Microcontroller 183 EM_68HC05 = 72, // Motorola MC68HC05 Microcontroller 184 EM_SVX = 73, // Silicon Graphics SVx 185 EM_ST19 = 74, // STMicroelectronics ST19 8-bit microcontroller 186 EM_VAX = 75, // Digital VAX 187 EM_CRIS = 76, // Axis Communications 32-bit embedded processor 188 EM_JAVELIN = 77, // Infineon Technologies 32-bit embedded processor 189 EM_FIREPATH = 78, // Element 14 64-bit DSP Processor 190 EM_ZSP = 79, // LSI Logic 16-bit DSP Processor 191 EM_MMIX = 80, // Donald Knuth's educational 64-bit processor 192 EM_HUANY = 81, // Harvard University machine-independent object files 193 EM_PRISM = 82, // SiTera Prism 194 EM_AVR = 83, // Atmel AVR 8-bit microcontroller 195 EM_FR30 = 84, // Fujitsu FR30 196 EM_D10V = 85, // Mitsubishi D10V 197 EM_D30V = 86, // Mitsubishi D30V 198 EM_V850 = 87, // NEC v850 199 EM_M32R = 88, // Mitsubishi M32R 200 EM_MN10300 = 89, // Matsushita MN10300 201 EM_MN10200 = 90, // Matsushita MN10200 202 EM_PJ = 91, // picoJava 203 EM_OPENRISC = 92, // OpenRISC 32-bit embedded processor 204 EM_ARC_COMPACT = 93, // ARC International ARCompact processor (old 205 // spelling/synonym: EM_ARC_A5) 206 EM_XTENSA = 94, // Tensilica Xtensa Architecture 207 EM_VIDEOCORE = 95, // Alphamosaic VideoCore processor 208 EM_TMM_GPP = 96, // Thompson Multimedia General Purpose Processor 209 EM_NS32K = 97, // National Semiconductor 32000 series 210 EM_TPC = 98, // Tenor Network TPC processor 211 EM_SNP1K = 99, // Trebia SNP 1000 processor 212 EM_ST200 = 100, // STMicroelectronics (www.st.com) ST200 213 EM_IP2K = 101, // Ubicom IP2xxx microcontroller family 214 EM_MAX = 102, // MAX Processor 215 EM_CR = 103, // National Semiconductor CompactRISC microprocessor 216 EM_F2MC16 = 104, // Fujitsu F2MC16 217 EM_MSP430 = 105, // Texas Instruments embedded microcontroller msp430 218 EM_BLACKFIN = 106, // Analog Devices Blackfin (DSP) processor 219 EM_SE_C33 = 107, // S1C33 Family of Seiko Epson processors 220 EM_SEP = 108, // Sharp embedded microprocessor 221 EM_ARCA = 109, // Arca RISC Microprocessor 222 EM_UNICORE = 110, // Microprocessor series from PKU-Unity Ltd. and MPRC 223 // of Peking University 224 EM_EXCESS = 111, // eXcess: 16/32/64-bit configurable embedded CPU 225 EM_DXP = 112, // Icera Semiconductor Inc. Deep Execution Processor 226 EM_ALTERA_NIOS2 = 113, // Altera Nios II soft-core processor 227 EM_CRX = 114, // National Semiconductor CompactRISC CRX 228 EM_XGATE = 115, // Motorola XGATE embedded processor 229 EM_C166 = 116, // Infineon C16x/XC16x processor 230 EM_M16C = 117, // Renesas M16C series microprocessors 231 EM_DSPIC30F = 118, // Microchip Technology dsPIC30F Digital Signal 232 // Controller 233 EM_CE = 119, // Freescale Communication Engine RISC core 234 EM_M32C = 120, // Renesas M32C series microprocessors 235 EM_TSK3000 = 131, // Altium TSK3000 core 236 EM_RS08 = 132, // Freescale RS08 embedded processor 237 EM_SHARC = 133, // Analog Devices SHARC family of 32-bit DSP 238 // processors 239 EM_ECOG2 = 134, // Cyan Technology eCOG2 microprocessor 240 EM_SCORE7 = 135, // Sunplus S+core7 RISC processor 241 EM_DSP24 = 136, // New Japan Radio (NJR) 24-bit DSP Processor 242 EM_VIDEOCORE3 = 137, // Broadcom VideoCore III processor 243 EM_LATTICEMICO32 = 138, // RISC processor for Lattice FPGA architecture 244 EM_SE_C17 = 139, // Seiko Epson C17 family 245 EM_TI_C6000 = 140, // The Texas Instruments TMS320C6000 DSP family 246 EM_TI_C2000 = 141, // The Texas Instruments TMS320C2000 DSP family 247 EM_TI_C5500 = 142, // The Texas Instruments TMS320C55x DSP family 248 EM_MMDSP_PLUS = 160, // STMicroelectronics 64bit VLIW Data Signal Processor 249 EM_CYPRESS_M8C = 161, // Cypress M8C microprocessor 250 EM_R32C = 162, // Renesas R32C series microprocessors 251 EM_TRIMEDIA = 163, // NXP Semiconductors TriMedia architecture family 252 EM_HEXAGON = 164, // Qualcomm Hexagon processor 253 EM_8051 = 165, // Intel 8051 and variants 254 EM_STXP7X = 166, // STMicroelectronics STxP7x family of configurable 255 // and extensible RISC processors 256 EM_NDS32 = 167, // Andes Technology compact code size embedded RISC 257 // processor family 258 EM_ECOG1 = 168, // Cyan Technology eCOG1X family 259 EM_ECOG1X = 168, // Cyan Technology eCOG1X family 260 EM_MAXQ30 = 169, // Dallas Semiconductor MAXQ30 Core Micro-controllers 261 EM_XIMO16 = 170, // New Japan Radio (NJR) 16-bit DSP Processor 262 EM_MANIK = 171, // M2000 Reconfigurable RISC Microprocessor 263 EM_CRAYNV2 = 172, // Cray Inc. NV2 vector architecture 264 EM_RX = 173, // Renesas RX family 265 EM_METAG = 174, // Imagination Technologies META processor 266 // architecture 267 EM_MCST_ELBRUS = 175, // MCST Elbrus general purpose hardware architecture 268 EM_ECOG16 = 176, // Cyan Technology eCOG16 family 269 EM_CR16 = 177, // National Semiconductor CompactRISC CR16 16-bit 270 // microprocessor 271 EM_ETPU = 178, // Freescale Extended Time Processing Unit 272 EM_SLE9X = 179, // Infineon Technologies SLE9X core 273 EM_L10M = 180, // Intel L10M 274 EM_K10M = 181, // Intel K10M 275 EM_AARCH64 = 183, // ARM AArch64 276 EM_AVR32 = 185, // Atmel Corporation 32-bit microprocessor family 277 EM_STM8 = 186, // STMicroeletronics STM8 8-bit microcontroller 278 EM_TILE64 = 187, // Tilera TILE64 multicore architecture family 279 EM_TILEPRO = 188, // Tilera TILEPro multicore architecture family 280 EM_CUDA = 190, // NVIDIA CUDA architecture 281 EM_TILEGX = 191, // Tilera TILE-Gx multicore architecture family 282 EM_CLOUDSHIELD = 192, // CloudShield architecture family 283 EM_COREA_1ST = 193, // KIPO-KAIST Core-A 1st generation processor family 284 EM_COREA_2ND = 194, // KIPO-KAIST Core-A 2nd generation processor family 285 EM_ARC_COMPACT2 = 195, // Synopsys ARCompact V2 286 EM_OPEN8 = 196, // Open8 8-bit RISC soft processor core 287 EM_RL78 = 197, // Renesas RL78 family 288 EM_VIDEOCORE5 = 198, // Broadcom VideoCore V processor 289 EM_78KOR = 199, // Renesas 78KOR family 290 EM_56800EX = 200, // Freescale 56800EX Digital Signal Controller (DSC) 291 EM_BA1 = 201, // Beyond BA1 CPU architecture 292 EM_BA2 = 202, // Beyond BA2 CPU architecture 293 EM_XCORE = 203, // XMOS xCORE processor family 294 EM_MCHP_PIC = 204, // Microchip 8-bit PIC(r) family 295 EM_INTEL205 = 205, // Reserved by Intel 296 EM_INTEL206 = 206, // Reserved by Intel 297 EM_INTEL207 = 207, // Reserved by Intel 298 EM_INTEL208 = 208, // Reserved by Intel 299 EM_INTEL209 = 209, // Reserved by Intel 300 EM_KM32 = 210, // KM211 KM32 32-bit processor 301 EM_KMX32 = 211, // KM211 KMX32 32-bit processor 302 EM_KMX16 = 212, // KM211 KMX16 16-bit processor 303 EM_KMX8 = 213, // KM211 KMX8 8-bit processor 304 EM_KVARC = 214, // KM211 KVARC processor 305 EM_CDP = 215, // Paneve CDP architecture family 306 EM_COGE = 216, // Cognitive Smart Memory Processor 307 EM_COOL = 217, // iCelero CoolEngine 308 EM_NORC = 218, // Nanoradio Optimized RISC 309 EM_CSR_KALIMBA = 219, // CSR Kalimba architecture family 310 EM_AMDGPU = 224, // AMD GPU architecture 311 EM_RISCV = 243, // RISC-V 312 EM_LANAI = 244, // Lanai 32-bit processor 313 EM_BPF = 247, // Linux kernel bpf virtual machine 314 EM_VE = 251, // NEC SX-Aurora VE 315 }; 316 317 // Object file classes. 318 enum { 319 ELFCLASSNONE = 0, 320 ELFCLASS32 = 1, // 32-bit object file 321 ELFCLASS64 = 2 // 64-bit object file 322 }; 323 324 // Object file byte orderings. 325 enum { 326 ELFDATANONE = 0, // Invalid data encoding. 327 ELFDATA2LSB = 1, // Little-endian object file 328 ELFDATA2MSB = 2 // Big-endian object file 329 }; 330 331 // OS ABI identification. 332 enum { 333 ELFOSABI_NONE = 0, // UNIX System V ABI 334 ELFOSABI_HPUX = 1, // HP-UX operating system 335 ELFOSABI_NETBSD = 2, // NetBSD 336 ELFOSABI_GNU = 3, // GNU/Linux 337 ELFOSABI_LINUX = 3, // Historical alias for ELFOSABI_GNU. 338 ELFOSABI_HURD = 4, // GNU/Hurd 339 ELFOSABI_SOLARIS = 6, // Solaris 340 ELFOSABI_AIX = 7, // AIX 341 ELFOSABI_IRIX = 8, // IRIX 342 ELFOSABI_FREEBSD = 9, // FreeBSD 343 ELFOSABI_TRU64 = 10, // TRU64 UNIX 344 ELFOSABI_MODESTO = 11, // Novell Modesto 345 ELFOSABI_OPENBSD = 12, // OpenBSD 346 ELFOSABI_OPENVMS = 13, // OpenVMS 347 ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 348 ELFOSABI_AROS = 15, // AROS 349 ELFOSABI_FENIXOS = 16, // FenixOS 350 ELFOSABI_CLOUDABI = 17, // Nuxi CloudABI 351 ELFOSABI_FIRST_ARCH = 64, // First architecture-specific OS ABI 352 ELFOSABI_AMDGPU_HSA = 64, // AMD HSA runtime 353 ELFOSABI_AMDGPU_PAL = 65, // AMD PAL runtime 354 ELFOSABI_AMDGPU_MESA3D = 66, // AMD GCN GPUs (GFX6+) for MESA runtime 355 ELFOSABI_ARM = 97, // ARM 356 ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 357 ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 358 ELFOSABI_STANDALONE = 255, // Standalone (embedded) application 359 ELFOSABI_LAST_ARCH = 255 // Last Architecture-specific OS ABI 360 }; 361 362 #define ELF_RELOC(name, value) name = value, 363 364 // X86_64 relocations. 365 enum { 366 #include "ELFRelocs/x86_64.def" 367 }; 368 369 // i386 relocations. 370 enum { 371 #include "ELFRelocs/i386.def" 372 }; 373 374 // ELF Relocation types for PPC32 375 enum { 376 #include "ELFRelocs/PowerPC.def" 377 }; 378 379 // Specific e_flags for PPC64 380 enum { 381 // e_flags bits specifying ABI: 382 // 1 for original ABI using function descriptors, 383 // 2 for revised ABI without function descriptors, 384 // 0 for unspecified or not using any features affected by the differences. 385 EF_PPC64_ABI = 3 386 }; 387 388 // Special values for the st_other field in the symbol table entry for PPC64. 389 enum { 390 STO_PPC64_LOCAL_BIT = 5, 391 STO_PPC64_LOCAL_MASK = (7 << STO_PPC64_LOCAL_BIT) 392 }; 393 static inline int64_t decodePPC64LocalEntryOffset(unsigned Other) { 394 unsigned Val = (Other & STO_PPC64_LOCAL_MASK) >> STO_PPC64_LOCAL_BIT; 395 return ((1 << Val) >> 2) << 2; 396 } 397 398 // ELF Relocation types for PPC64 399 enum { 400 #include "ELFRelocs/PowerPC64.def" 401 }; 402 403 // ELF Relocation types for AArch64 404 enum { 405 #include "ELFRelocs/AArch64.def" 406 }; 407 408 // ARM Specific e_flags 409 enum : unsigned { 410 EF_ARM_SOFT_FLOAT = 0x00000200U, // Legacy pre EABI_VER5 411 EF_ARM_ABI_FLOAT_SOFT = 0x00000200U, // EABI_VER5 412 EF_ARM_VFP_FLOAT = 0x00000400U, // Legacy pre EABI_VER5 413 EF_ARM_ABI_FLOAT_HARD = 0x00000400U, // EABI_VER5 414 EF_ARM_EABI_UNKNOWN = 0x00000000U, 415 EF_ARM_EABI_VER1 = 0x01000000U, 416 EF_ARM_EABI_VER2 = 0x02000000U, 417 EF_ARM_EABI_VER3 = 0x03000000U, 418 EF_ARM_EABI_VER4 = 0x04000000U, 419 EF_ARM_EABI_VER5 = 0x05000000U, 420 EF_ARM_EABIMASK = 0xFF000000U 421 }; 422 423 // ELF Relocation types for ARM 424 enum { 425 #include "ELFRelocs/ARM.def" 426 }; 427 428 // ARC Specific e_flags 429 enum : unsigned { 430 EF_ARC_MACH_MSK = 0x000000ff, 431 EF_ARC_OSABI_MSK = 0x00000f00, 432 E_ARC_MACH_ARC600 = 0x00000002, 433 E_ARC_MACH_ARC601 = 0x00000004, 434 E_ARC_MACH_ARC700 = 0x00000003, 435 EF_ARC_CPU_ARCV2EM = 0x00000005, 436 EF_ARC_CPU_ARCV2HS = 0x00000006, 437 E_ARC_OSABI_ORIG = 0x00000000, 438 E_ARC_OSABI_V2 = 0x00000200, 439 E_ARC_OSABI_V3 = 0x00000300, 440 E_ARC_OSABI_V4 = 0x00000400, 441 EF_ARC_PIC = 0x00000100 442 }; 443 444 // ELF Relocation types for ARC 445 enum { 446 #include "ELFRelocs/ARC.def" 447 }; 448 449 // AVR specific e_flags 450 enum : unsigned { 451 EF_AVR_ARCH_AVR1 = 1, 452 EF_AVR_ARCH_AVR2 = 2, 453 EF_AVR_ARCH_AVR25 = 25, 454 EF_AVR_ARCH_AVR3 = 3, 455 EF_AVR_ARCH_AVR31 = 31, 456 EF_AVR_ARCH_AVR35 = 35, 457 EF_AVR_ARCH_AVR4 = 4, 458 EF_AVR_ARCH_AVR5 = 5, 459 EF_AVR_ARCH_AVR51 = 51, 460 EF_AVR_ARCH_AVR6 = 6, 461 EF_AVR_ARCH_AVRTINY = 100, 462 EF_AVR_ARCH_XMEGA1 = 101, 463 EF_AVR_ARCH_XMEGA2 = 102, 464 EF_AVR_ARCH_XMEGA3 = 103, 465 EF_AVR_ARCH_XMEGA4 = 104, 466 EF_AVR_ARCH_XMEGA5 = 105, 467 EF_AVR_ARCH_XMEGA6 = 106, 468 EF_AVR_ARCH_XMEGA7 = 107 469 }; 470 471 // ELF Relocation types for AVR 472 enum { 473 #include "ELFRelocs/AVR.def" 474 }; 475 476 // Mips Specific e_flags 477 enum : unsigned { 478 EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions 479 EF_MIPS_PIC = 0x00000002, // Position independent code 480 EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code 481 EF_MIPS_ABI2 = 0x00000020, // File uses N32 ABI 482 EF_MIPS_32BITMODE = 0x00000100, // Code compiled for a 64-bit machine 483 // in 32-bit mode 484 EF_MIPS_FP64 = 0x00000200, // Code compiled for a 32-bit machine 485 // but uses 64-bit FP registers 486 EF_MIPS_NAN2008 = 0x00000400, // Uses IEE 754-2008 NaN encoding 487 488 // ABI flags 489 EF_MIPS_ABI_O32 = 0x00001000, // This file follows the first MIPS 32 bit ABI 490 EF_MIPS_ABI_O64 = 0x00002000, // O32 ABI extended for 64-bit architecture. 491 EF_MIPS_ABI_EABI32 = 0x00003000, // EABI in 32 bit mode. 492 EF_MIPS_ABI_EABI64 = 0x00004000, // EABI in 64 bit mode. 493 EF_MIPS_ABI = 0x0000f000, // Mask for selecting EF_MIPS_ABI_ variant. 494 495 // MIPS machine variant 496 EF_MIPS_MACH_NONE = 0x00000000, // A standard MIPS implementation. 497 EF_MIPS_MACH_3900 = 0x00810000, // Toshiba R3900 498 EF_MIPS_MACH_4010 = 0x00820000, // LSI R4010 499 EF_MIPS_MACH_4100 = 0x00830000, // NEC VR4100 500 EF_MIPS_MACH_4650 = 0x00850000, // MIPS R4650 501 EF_MIPS_MACH_4120 = 0x00870000, // NEC VR4120 502 EF_MIPS_MACH_4111 = 0x00880000, // NEC VR4111/VR4181 503 EF_MIPS_MACH_SB1 = 0x008a0000, // Broadcom SB-1 504 EF_MIPS_MACH_OCTEON = 0x008b0000, // Cavium Networks Octeon 505 EF_MIPS_MACH_XLR = 0x008c0000, // RMI Xlr 506 EF_MIPS_MACH_OCTEON2 = 0x008d0000, // Cavium Networks Octeon2 507 EF_MIPS_MACH_OCTEON3 = 0x008e0000, // Cavium Networks Octeon3 508 EF_MIPS_MACH_5400 = 0x00910000, // NEC VR5400 509 EF_MIPS_MACH_5900 = 0x00920000, // MIPS R5900 510 EF_MIPS_MACH_5500 = 0x00980000, // NEC VR5500 511 EF_MIPS_MACH_9000 = 0x00990000, // Unknown 512 EF_MIPS_MACH_LS2E = 0x00a00000, // ST Microelectronics Loongson 2E 513 EF_MIPS_MACH_LS2F = 0x00a10000, // ST Microelectronics Loongson 2F 514 EF_MIPS_MACH_LS3A = 0x00a20000, // Loongson 3A 515 EF_MIPS_MACH = 0x00ff0000, // EF_MIPS_MACH_xxx selection mask 516 517 // ARCH_ASE 518 EF_MIPS_MICROMIPS = 0x02000000, // microMIPS 519 EF_MIPS_ARCH_ASE_M16 = 0x04000000, // Has Mips-16 ISA extensions 520 EF_MIPS_ARCH_ASE_MDMX = 0x08000000, // Has MDMX multimedia extensions 521 EF_MIPS_ARCH_ASE = 0x0f000000, // Mask for EF_MIPS_ARCH_ASE_xxx flags 522 523 // ARCH 524 EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set 525 EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set 526 EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set 527 EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set 528 EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set 529 EF_MIPS_ARCH_32 = 0x50000000, // MIPS32 instruction set per linux not elf.h 530 EF_MIPS_ARCH_64 = 0x60000000, // MIPS64 instruction set per linux not elf.h 531 EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2, mips32r3, mips32r5 532 EF_MIPS_ARCH_64R2 = 0x80000000, // mips64r2, mips64r3, mips64r5 533 EF_MIPS_ARCH_32R6 = 0x90000000, // mips32r6 534 EF_MIPS_ARCH_64R6 = 0xa0000000, // mips64r6 535 EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant 536 }; 537 538 // ELF Relocation types for Mips 539 enum { 540 #include "ELFRelocs/Mips.def" 541 }; 542 543 // Special values for the st_other field in the symbol table entry for MIPS. 544 enum { 545 STO_MIPS_OPTIONAL = 0x04, // Symbol whose definition is optional 546 STO_MIPS_PLT = 0x08, // PLT entry related dynamic table record 547 STO_MIPS_PIC = 0x20, // PIC func in an object mixes PIC/non-PIC 548 STO_MIPS_MICROMIPS = 0x80, // MIPS Specific ISA for MicroMips 549 STO_MIPS_MIPS16 = 0xf0 // MIPS Specific ISA for Mips16 550 }; 551 552 // .MIPS.options section descriptor kinds 553 enum { 554 ODK_NULL = 0, // Undefined 555 ODK_REGINFO = 1, // Register usage information 556 ODK_EXCEPTIONS = 2, // Exception processing options 557 ODK_PAD = 3, // Section padding options 558 ODK_HWPATCH = 4, // Hardware patches applied 559 ODK_FILL = 5, // Linker fill value 560 ODK_TAGS = 6, // Space for tool identification 561 ODK_HWAND = 7, // Hardware AND patches applied 562 ODK_HWOR = 8, // Hardware OR patches applied 563 ODK_GP_GROUP = 9, // GP group to use for text/data sections 564 ODK_IDENT = 10, // ID information 565 ODK_PAGESIZE = 11 // Page size information 566 }; 567 568 // Hexagon-specific e_flags 569 enum { 570 // Object processor version flags, bits[11:0] 571 EF_HEXAGON_MACH_V2 = 0x00000001, // Hexagon V2 572 EF_HEXAGON_MACH_V3 = 0x00000002, // Hexagon V3 573 EF_HEXAGON_MACH_V4 = 0x00000003, // Hexagon V4 574 EF_HEXAGON_MACH_V5 = 0x00000004, // Hexagon V5 575 EF_HEXAGON_MACH_V55 = 0x00000005, // Hexagon V55 576 EF_HEXAGON_MACH_V60 = 0x00000060, // Hexagon V60 577 EF_HEXAGON_MACH_V62 = 0x00000062, // Hexagon V62 578 EF_HEXAGON_MACH_V65 = 0x00000065, // Hexagon V65 579 EF_HEXAGON_MACH_V66 = 0x00000066, // Hexagon V66 580 EF_HEXAGON_MACH_V67 = 0x00000067, // Hexagon V67 581 EF_HEXAGON_MACH_V67T = 0x00008067, // Hexagon V67T 582 583 // Highest ISA version flags 584 EF_HEXAGON_ISA_MACH = 0x00000000, // Same as specified in bits[11:0] 585 // of e_flags 586 EF_HEXAGON_ISA_V2 = 0x00000010, // Hexagon V2 ISA 587 EF_HEXAGON_ISA_V3 = 0x00000020, // Hexagon V3 ISA 588 EF_HEXAGON_ISA_V4 = 0x00000030, // Hexagon V4 ISA 589 EF_HEXAGON_ISA_V5 = 0x00000040, // Hexagon V5 ISA 590 EF_HEXAGON_ISA_V55 = 0x00000050, // Hexagon V55 ISA 591 EF_HEXAGON_ISA_V60 = 0x00000060, // Hexagon V60 ISA 592 EF_HEXAGON_ISA_V62 = 0x00000062, // Hexagon V62 ISA 593 EF_HEXAGON_ISA_V65 = 0x00000065, // Hexagon V65 ISA 594 EF_HEXAGON_ISA_V66 = 0x00000066, // Hexagon V66 ISA 595 EF_HEXAGON_ISA_V67 = 0x00000067, // Hexagon V67 ISA 596 }; 597 598 // Hexagon-specific section indexes for common small data 599 enum { 600 SHN_HEXAGON_SCOMMON = 0xff00, // Other access sizes 601 SHN_HEXAGON_SCOMMON_1 = 0xff01, // Byte-sized access 602 SHN_HEXAGON_SCOMMON_2 = 0xff02, // Half-word-sized access 603 SHN_HEXAGON_SCOMMON_4 = 0xff03, // Word-sized access 604 SHN_HEXAGON_SCOMMON_8 = 0xff04 // Double-word-size access 605 }; 606 607 // ELF Relocation types for Hexagon 608 enum { 609 #include "ELFRelocs/Hexagon.def" 610 }; 611 612 // ELF Relocation type for Lanai. 613 enum { 614 #include "ELFRelocs/Lanai.def" 615 }; 616 617 // RISCV Specific e_flags 618 enum : unsigned { 619 EF_RISCV_RVC = 0x0001, 620 EF_RISCV_FLOAT_ABI = 0x0006, 621 EF_RISCV_FLOAT_ABI_SOFT = 0x0000, 622 EF_RISCV_FLOAT_ABI_SINGLE = 0x0002, 623 EF_RISCV_FLOAT_ABI_DOUBLE = 0x0004, 624 EF_RISCV_FLOAT_ABI_QUAD = 0x0006, 625 EF_RISCV_RVE = 0x0008 626 }; 627 628 // ELF Relocation types for RISC-V 629 enum { 630 #include "ELFRelocs/RISCV.def" 631 }; 632 633 // ELF Relocation types for S390/zSeries 634 enum { 635 #include "ELFRelocs/SystemZ.def" 636 }; 637 638 // ELF Relocation type for Sparc. 639 enum { 640 #include "ELFRelocs/Sparc.def" 641 }; 642 643 // AMDGPU specific e_flags. 644 enum : unsigned { 645 // Processor selection mask for EF_AMDGPU_MACH_* values. 646 EF_AMDGPU_MACH = 0x0ff, 647 648 // Not specified processor. 649 EF_AMDGPU_MACH_NONE = 0x000, 650 651 // R600-based processors. 652 653 // Radeon HD 2000/3000 Series (R600). 654 EF_AMDGPU_MACH_R600_R600 = 0x001, 655 EF_AMDGPU_MACH_R600_R630 = 0x002, 656 EF_AMDGPU_MACH_R600_RS880 = 0x003, 657 EF_AMDGPU_MACH_R600_RV670 = 0x004, 658 // Radeon HD 4000 Series (R700). 659 EF_AMDGPU_MACH_R600_RV710 = 0x005, 660 EF_AMDGPU_MACH_R600_RV730 = 0x006, 661 EF_AMDGPU_MACH_R600_RV770 = 0x007, 662 // Radeon HD 5000 Series (Evergreen). 663 EF_AMDGPU_MACH_R600_CEDAR = 0x008, 664 EF_AMDGPU_MACH_R600_CYPRESS = 0x009, 665 EF_AMDGPU_MACH_R600_JUNIPER = 0x00a, 666 EF_AMDGPU_MACH_R600_REDWOOD = 0x00b, 667 EF_AMDGPU_MACH_R600_SUMO = 0x00c, 668 // Radeon HD 6000 Series (Northern Islands). 669 EF_AMDGPU_MACH_R600_BARTS = 0x00d, 670 EF_AMDGPU_MACH_R600_CAICOS = 0x00e, 671 EF_AMDGPU_MACH_R600_CAYMAN = 0x00f, 672 EF_AMDGPU_MACH_R600_TURKS = 0x010, 673 674 // Reserved for R600-based processors. 675 EF_AMDGPU_MACH_R600_RESERVED_FIRST = 0x011, 676 EF_AMDGPU_MACH_R600_RESERVED_LAST = 0x01f, 677 678 // First/last R600-based processors. 679 EF_AMDGPU_MACH_R600_FIRST = EF_AMDGPU_MACH_R600_R600, 680 EF_AMDGPU_MACH_R600_LAST = EF_AMDGPU_MACH_R600_TURKS, 681 682 // AMDGCN-based processors. 683 684 // AMDGCN GFX6. 685 EF_AMDGPU_MACH_AMDGCN_GFX600 = 0x020, 686 EF_AMDGPU_MACH_AMDGCN_GFX601 = 0x021, 687 // AMDGCN GFX7. 688 EF_AMDGPU_MACH_AMDGCN_GFX700 = 0x022, 689 EF_AMDGPU_MACH_AMDGCN_GFX701 = 0x023, 690 EF_AMDGPU_MACH_AMDGCN_GFX702 = 0x024, 691 EF_AMDGPU_MACH_AMDGCN_GFX703 = 0x025, 692 EF_AMDGPU_MACH_AMDGCN_GFX704 = 0x026, 693 // AMDGCN GFX8. 694 EF_AMDGPU_MACH_AMDGCN_GFX801 = 0x028, 695 EF_AMDGPU_MACH_AMDGCN_GFX802 = 0x029, 696 EF_AMDGPU_MACH_AMDGCN_GFX803 = 0x02a, 697 EF_AMDGPU_MACH_AMDGCN_GFX810 = 0x02b, 698 // AMDGCN GFX9. 699 EF_AMDGPU_MACH_AMDGCN_GFX900 = 0x02c, 700 EF_AMDGPU_MACH_AMDGCN_GFX902 = 0x02d, 701 EF_AMDGPU_MACH_AMDGCN_GFX904 = 0x02e, 702 EF_AMDGPU_MACH_AMDGCN_GFX906 = 0x02f, 703 EF_AMDGPU_MACH_AMDGCN_GFX908 = 0x030, 704 EF_AMDGPU_MACH_AMDGCN_GFX909 = 0x031, 705 // AMDGCN GFX10. 706 EF_AMDGPU_MACH_AMDGCN_GFX1010 = 0x033, 707 EF_AMDGPU_MACH_AMDGCN_GFX1011 = 0x034, 708 EF_AMDGPU_MACH_AMDGCN_GFX1012 = 0x035, 709 EF_AMDGPU_MACH_AMDGCN_GFX1030 = 0x036, 710 711 // Reserved for AMDGCN-based processors. 712 EF_AMDGPU_MACH_AMDGCN_RESERVED0 = 0x027, 713 EF_AMDGPU_MACH_AMDGCN_RESERVED1 = 0x032, 714 715 // First/last AMDGCN-based processors. 716 EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600, 717 EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_GFX1030, 718 719 // Indicates if the "xnack" target feature is enabled for all code contained 720 // in the object. 721 EF_AMDGPU_XNACK = 0x100, 722 // Indicates if the "sram-ecc" target feature is enabled for all code 723 // contained in the object. 724 EF_AMDGPU_SRAM_ECC = 0x200, 725 }; 726 727 // ELF Relocation types for AMDGPU 728 enum { 729 #include "ELFRelocs/AMDGPU.def" 730 }; 731 732 // ELF Relocation types for BPF 733 enum { 734 #include "ELFRelocs/BPF.def" 735 }; 736 737 // MSP430 specific e_flags 738 enum : unsigned { 739 EF_MSP430_MACH_MSP430x11 = 11, 740 EF_MSP430_MACH_MSP430x11x1 = 110, 741 EF_MSP430_MACH_MSP430x12 = 12, 742 EF_MSP430_MACH_MSP430x13 = 13, 743 EF_MSP430_MACH_MSP430x14 = 14, 744 EF_MSP430_MACH_MSP430x15 = 15, 745 EF_MSP430_MACH_MSP430x16 = 16, 746 EF_MSP430_MACH_MSP430x20 = 20, 747 EF_MSP430_MACH_MSP430x22 = 22, 748 EF_MSP430_MACH_MSP430x23 = 23, 749 EF_MSP430_MACH_MSP430x24 = 24, 750 EF_MSP430_MACH_MSP430x26 = 26, 751 EF_MSP430_MACH_MSP430x31 = 31, 752 EF_MSP430_MACH_MSP430x32 = 32, 753 EF_MSP430_MACH_MSP430x33 = 33, 754 EF_MSP430_MACH_MSP430x41 = 41, 755 EF_MSP430_MACH_MSP430x42 = 42, 756 EF_MSP430_MACH_MSP430x43 = 43, 757 EF_MSP430_MACH_MSP430x44 = 44, 758 EF_MSP430_MACH_MSP430X = 45, 759 EF_MSP430_MACH_MSP430x46 = 46, 760 EF_MSP430_MACH_MSP430x47 = 47, 761 EF_MSP430_MACH_MSP430x54 = 54, 762 }; 763 764 // ELF Relocation types for MSP430 765 enum { 766 #include "ELFRelocs/MSP430.def" 767 }; 768 769 // ELF Relocation type for VE. 770 enum { 771 #include "ELFRelocs/VE.def" 772 }; 773 774 #undef ELF_RELOC 775 776 // Section header. 777 struct Elf32_Shdr { 778 Elf32_Word sh_name; // Section name (index into string table) 779 Elf32_Word sh_type; // Section type (SHT_*) 780 Elf32_Word sh_flags; // Section flags (SHF_*) 781 Elf32_Addr sh_addr; // Address where section is to be loaded 782 Elf32_Off sh_offset; // File offset of section data, in bytes 783 Elf32_Word sh_size; // Size of section, in bytes 784 Elf32_Word sh_link; // Section type-specific header table index link 785 Elf32_Word sh_info; // Section type-specific extra information 786 Elf32_Word sh_addralign; // Section address alignment 787 Elf32_Word sh_entsize; // Size of records contained within the section 788 }; 789 790 // Section header for ELF64 - same fields as ELF32, different types. 791 struct Elf64_Shdr { 792 Elf64_Word sh_name; 793 Elf64_Word sh_type; 794 Elf64_Xword sh_flags; 795 Elf64_Addr sh_addr; 796 Elf64_Off sh_offset; 797 Elf64_Xword sh_size; 798 Elf64_Word sh_link; 799 Elf64_Word sh_info; 800 Elf64_Xword sh_addralign; 801 Elf64_Xword sh_entsize; 802 }; 803 804 // Special section indices. 805 enum { 806 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 807 SHN_LORESERVE = 0xff00, // Lowest reserved index 808 SHN_LOPROC = 0xff00, // Lowest processor-specific index 809 SHN_HIPROC = 0xff1f, // Highest processor-specific index 810 SHN_LOOS = 0xff20, // Lowest operating system-specific index 811 SHN_HIOS = 0xff3f, // Highest operating system-specific index 812 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 813 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 814 SHN_XINDEX = 0xffff, // Mark that the index is >= SHN_LORESERVE 815 SHN_HIRESERVE = 0xffff // Highest reserved index 816 }; 817 818 // Section types. 819 enum : unsigned { 820 SHT_NULL = 0, // No associated section (inactive entry). 821 SHT_PROGBITS = 1, // Program-defined contents. 822 SHT_SYMTAB = 2, // Symbol table. 823 SHT_STRTAB = 3, // String table. 824 SHT_RELA = 4, // Relocation entries; explicit addends. 825 SHT_HASH = 5, // Symbol hash table. 826 SHT_DYNAMIC = 6, // Information for dynamic linking. 827 SHT_NOTE = 7, // Information about the file. 828 SHT_NOBITS = 8, // Data occupies no space in the file. 829 SHT_REL = 9, // Relocation entries; no explicit addends. 830 SHT_SHLIB = 10, // Reserved. 831 SHT_DYNSYM = 11, // Symbol table. 832 SHT_INIT_ARRAY = 14, // Pointers to initialization functions. 833 SHT_FINI_ARRAY = 15, // Pointers to termination functions. 834 SHT_PREINIT_ARRAY = 16, // Pointers to pre-init functions. 835 SHT_GROUP = 17, // Section group. 836 SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. 837 // Experimental support for SHT_RELR sections. For details, see proposal 838 // at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg 839 SHT_RELR = 19, // Relocation entries; only offsets. 840 SHT_LOOS = 0x60000000, // Lowest operating system-specific type. 841 // Android packed relocation section types. 842 // https://android.googlesource.com/platform/bionic/+/6f12bfece5dcc01325e0abba56a46b1bcf991c69/tools/relocation_packer/src/elf_file.cc#37 843 SHT_ANDROID_REL = 0x60000001, 844 SHT_ANDROID_RELA = 0x60000002, 845 SHT_LLVM_ODRTAB = 0x6fff4c00, // LLVM ODR table. 846 SHT_LLVM_LINKER_OPTIONS = 0x6fff4c01, // LLVM Linker Options. 847 SHT_LLVM_CALL_GRAPH_PROFILE = 0x6fff4c02, // LLVM Call Graph Profile. 848 SHT_LLVM_ADDRSIG = 0x6fff4c03, // List of address-significant symbols 849 // for safe ICF. 850 SHT_LLVM_DEPENDENT_LIBRARIES = 851 0x6fff4c04, // LLVM Dependent Library Specifiers. 852 SHT_LLVM_SYMPART = 0x6fff4c05, // Symbol partition specification. 853 SHT_LLVM_PART_EHDR = 0x6fff4c06, // ELF header for loadable partition. 854 SHT_LLVM_PART_PHDR = 0x6fff4c07, // Phdrs for loadable partition. 855 // Android's experimental support for SHT_RELR sections. 856 // https://android.googlesource.com/platform/bionic/+/b7feec74547f84559a1467aca02708ff61346d2a/libc/include/elf.h#512 857 SHT_ANDROID_RELR = 0x6fffff00, // Relocation entries; only offsets. 858 SHT_GNU_ATTRIBUTES = 0x6ffffff5, // Object attributes. 859 SHT_GNU_HASH = 0x6ffffff6, // GNU-style hash table. 860 SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions. 861 SHT_GNU_verneed = 0x6ffffffe, // GNU version references. 862 SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table. 863 SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. 864 SHT_LOPROC = 0x70000000, // Lowest processor arch-specific type. 865 // Fixme: All this is duplicated in MCSectionELF. Why?? 866 // Exception Index table 867 SHT_ARM_EXIDX = 0x70000001U, 868 // BPABI DLL dynamic linking pre-emption map 869 SHT_ARM_PREEMPTMAP = 0x70000002U, 870 // Object file compatibility attributes 871 SHT_ARM_ATTRIBUTES = 0x70000003U, 872 SHT_ARM_DEBUGOVERLAY = 0x70000004U, 873 SHT_ARM_OVERLAYSECTION = 0x70000005U, 874 SHT_HEX_ORDERED = 0x70000000, // Link editor is to sort the entries in 875 // this section based on their sizes 876 SHT_X86_64_UNWIND = 0x70000001, // Unwind information 877 878 SHT_MIPS_REGINFO = 0x70000006, // Register usage information 879 SHT_MIPS_OPTIONS = 0x7000000d, // General options 880 SHT_MIPS_DWARF = 0x7000001e, // DWARF debugging section. 881 SHT_MIPS_ABIFLAGS = 0x7000002a, // ABI information. 882 883 SHT_MSP430_ATTRIBUTES = 0x70000003U, 884 885 SHT_RISCV_ATTRIBUTES = 0x70000003U, 886 887 SHT_HIPROC = 0x7fffffff, // Highest processor arch-specific type. 888 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 889 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 890 }; 891 892 // Section flags. 893 enum : unsigned { 894 // Section data should be writable during execution. 895 SHF_WRITE = 0x1, 896 897 // Section occupies memory during program execution. 898 SHF_ALLOC = 0x2, 899 900 // Section contains executable machine instructions. 901 SHF_EXECINSTR = 0x4, 902 903 // The data in this section may be merged. 904 SHF_MERGE = 0x10, 905 906 // The data in this section is null-terminated strings. 907 SHF_STRINGS = 0x20, 908 909 // A field in this section holds a section header table index. 910 SHF_INFO_LINK = 0x40U, 911 912 // Adds special ordering requirements for link editors. 913 SHF_LINK_ORDER = 0x80U, 914 915 // This section requires special OS-specific processing to avoid incorrect 916 // behavior. 917 SHF_OS_NONCONFORMING = 0x100U, 918 919 // This section is a member of a section group. 920 SHF_GROUP = 0x200U, 921 922 // This section holds Thread-Local Storage. 923 SHF_TLS = 0x400U, 924 925 // Identifies a section containing compressed data. 926 SHF_COMPRESSED = 0x800U, 927 928 // This section is excluded from the final executable or shared library. 929 SHF_EXCLUDE = 0x80000000U, 930 931 // Start of target-specific flags. 932 933 SHF_MASKOS = 0x0ff00000, 934 935 // Bits indicating processor-specific flags. 936 SHF_MASKPROC = 0xf0000000, 937 938 /// All sections with the "d" flag are grouped together by the linker to form 939 /// the data section and the dp register is set to the start of the section by 940 /// the boot code. 941 XCORE_SHF_DP_SECTION = 0x10000000, 942 943 /// All sections with the "c" flag are grouped together by the linker to form 944 /// the constant pool and the cp register is set to the start of the constant 945 /// pool by the boot code. 946 XCORE_SHF_CP_SECTION = 0x20000000, 947 948 // If an object file section does not have this flag set, then it may not hold 949 // more than 2GB and can be freely referred to in objects using smaller code 950 // models. Otherwise, only objects using larger code models can refer to them. 951 // For example, a medium code model object can refer to data in a section that 952 // sets this flag besides being able to refer to data in a section that does 953 // not set it; likewise, a small code model object can refer only to code in a 954 // section that does not set this flag. 955 SHF_X86_64_LARGE = 0x10000000, 956 957 // All sections with the GPREL flag are grouped into a global data area 958 // for faster accesses 959 SHF_HEX_GPREL = 0x10000000, 960 961 // Section contains text/data which may be replicated in other sections. 962 // Linker must retain only one copy. 963 SHF_MIPS_NODUPES = 0x01000000, 964 965 // Linker must generate implicit hidden weak names. 966 SHF_MIPS_NAMES = 0x02000000, 967 968 // Section data local to process. 969 SHF_MIPS_LOCAL = 0x04000000, 970 971 // Do not strip this section. 972 SHF_MIPS_NOSTRIP = 0x08000000, 973 974 // Section must be part of global data area. 975 SHF_MIPS_GPREL = 0x10000000, 976 977 // This section should be merged. 978 SHF_MIPS_MERGE = 0x20000000, 979 980 // Address size to be inferred from section entry size. 981 SHF_MIPS_ADDR = 0x40000000, 982 983 // Section data is string data by default. 984 SHF_MIPS_STRING = 0x80000000, 985 986 // Make code section unreadable when in execute-only mode 987 SHF_ARM_PURECODE = 0x20000000 988 }; 989 990 // Section Group Flags 991 enum : unsigned { 992 GRP_COMDAT = 0x1, 993 GRP_MASKOS = 0x0ff00000, 994 GRP_MASKPROC = 0xf0000000 995 }; 996 997 // Symbol table entries for ELF32. 998 struct Elf32_Sym { 999 Elf32_Word st_name; // Symbol name (index into string table) 1000 Elf32_Addr st_value; // Value or address associated with the symbol 1001 Elf32_Word st_size; // Size of the symbol 1002 unsigned char st_info; // Symbol's type and binding attributes 1003 unsigned char st_other; // Must be zero; reserved 1004 Elf32_Half st_shndx; // Which section (header table index) it's defined in 1005 1006 // These accessors and mutators correspond to the ELF32_ST_BIND, 1007 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 1008 unsigned char getBinding() const { return st_info >> 4; } 1009 unsigned char getType() const { return st_info & 0x0f; } 1010 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 1011 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 1012 void setBindingAndType(unsigned char b, unsigned char t) { 1013 st_info = (b << 4) + (t & 0x0f); 1014 } 1015 }; 1016 1017 // Symbol table entries for ELF64. 1018 struct Elf64_Sym { 1019 Elf64_Word st_name; // Symbol name (index into string table) 1020 unsigned char st_info; // Symbol's type and binding attributes 1021 unsigned char st_other; // Must be zero; reserved 1022 Elf64_Half st_shndx; // Which section (header tbl index) it's defined in 1023 Elf64_Addr st_value; // Value or address associated with the symbol 1024 Elf64_Xword st_size; // Size of the symbol 1025 1026 // These accessors and mutators are identical to those defined for ELF32 1027 // symbol table entries. 1028 unsigned char getBinding() const { return st_info >> 4; } 1029 unsigned char getType() const { return st_info & 0x0f; } 1030 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 1031 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 1032 void setBindingAndType(unsigned char b, unsigned char t) { 1033 st_info = (b << 4) + (t & 0x0f); 1034 } 1035 }; 1036 1037 // The size (in bytes) of symbol table entries. 1038 enum { 1039 SYMENTRY_SIZE32 = 16, // 32-bit symbol entry size 1040 SYMENTRY_SIZE64 = 24 // 64-bit symbol entry size. 1041 }; 1042 1043 // Symbol bindings. 1044 enum { 1045 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 1046 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 1047 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 1048 STB_GNU_UNIQUE = 10, 1049 STB_LOOS = 10, // Lowest operating system-specific binding type 1050 STB_HIOS = 12, // Highest operating system-specific binding type 1051 STB_LOPROC = 13, // Lowest processor-specific binding type 1052 STB_HIPROC = 15 // Highest processor-specific binding type 1053 }; 1054 1055 // Symbol types. 1056 enum { 1057 STT_NOTYPE = 0, // Symbol's type is not specified 1058 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 1059 STT_FUNC = 2, // Symbol is executable code (function, etc.) 1060 STT_SECTION = 3, // Symbol refers to a section 1061 STT_FILE = 4, // Local, absolute symbol that refers to a file 1062 STT_COMMON = 5, // An uninitialized common block 1063 STT_TLS = 6, // Thread local data object 1064 STT_GNU_IFUNC = 10, // GNU indirect function 1065 STT_LOOS = 10, // Lowest operating system-specific symbol type 1066 STT_HIOS = 12, // Highest operating system-specific symbol type 1067 STT_LOPROC = 13, // Lowest processor-specific symbol type 1068 STT_HIPROC = 15, // Highest processor-specific symbol type 1069 1070 // AMDGPU symbol types 1071 STT_AMDGPU_HSA_KERNEL = 10 1072 }; 1073 1074 enum { 1075 STV_DEFAULT = 0, // Visibility is specified by binding type 1076 STV_INTERNAL = 1, // Defined by processor supplements 1077 STV_HIDDEN = 2, // Not visible to other components 1078 STV_PROTECTED = 3 // Visible in other components but not preemptable 1079 }; 1080 1081 // Symbol number. 1082 enum { STN_UNDEF = 0 }; 1083 1084 // Special relocation symbols used in the MIPS64 ELF relocation entries 1085 enum { 1086 RSS_UNDEF = 0, // None 1087 RSS_GP = 1, // Value of gp 1088 RSS_GP0 = 2, // Value of gp used to create object being relocated 1089 RSS_LOC = 3 // Address of location being relocated 1090 }; 1091 1092 // Relocation entry, without explicit addend. 1093 struct Elf32_Rel { 1094 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1095 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1096 1097 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1098 // and ELF32_R_INFO macros defined in the ELF specification: 1099 Elf32_Word getSymbol() const { return (r_info >> 8); } 1100 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 1101 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1102 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1103 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1104 r_info = (s << 8) + t; 1105 } 1106 }; 1107 1108 // Relocation entry with explicit addend. 1109 struct Elf32_Rela { 1110 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 1111 Elf32_Word r_info; // Symbol table index and type of relocation to apply 1112 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 1113 1114 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 1115 // and ELF32_R_INFO macros defined in the ELF specification: 1116 Elf32_Word getSymbol() const { return (r_info >> 8); } 1117 unsigned char getType() const { return (unsigned char)(r_info & 0x0ff); } 1118 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 1119 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 1120 void setSymbolAndType(Elf32_Word s, unsigned char t) { 1121 r_info = (s << 8) + t; 1122 } 1123 }; 1124 1125 // Relocation entry without explicit addend or info (relative relocations only). 1126 typedef Elf32_Word Elf32_Relr; // offset/bitmap for relative relocations 1127 1128 // Relocation entry, without explicit addend. 1129 struct Elf64_Rel { 1130 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1131 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1132 1133 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1134 // and ELF64_R_INFO macros defined in the ELF specification: 1135 Elf64_Word getSymbol() const { return (r_info >> 32); } 1136 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1137 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1138 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1139 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1140 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1141 } 1142 }; 1143 1144 // Relocation entry with explicit addend. 1145 struct Elf64_Rela { 1146 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 1147 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 1148 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 1149 1150 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 1151 // and ELF64_R_INFO macros defined in the ELF specification: 1152 Elf64_Word getSymbol() const { return (r_info >> 32); } 1153 Elf64_Word getType() const { return (Elf64_Word)(r_info & 0xffffffffL); } 1154 void setSymbol(Elf64_Word s) { setSymbolAndType(s, getType()); } 1155 void setType(Elf64_Word t) { setSymbolAndType(getSymbol(), t); } 1156 void setSymbolAndType(Elf64_Word s, Elf64_Word t) { 1157 r_info = ((Elf64_Xword)s << 32) + (t & 0xffffffffL); 1158 } 1159 }; 1160 1161 // Relocation entry without explicit addend or info (relative relocations only). 1162 typedef Elf64_Xword Elf64_Relr; // offset/bitmap for relative relocations 1163 1164 // Program header for ELF32. 1165 struct Elf32_Phdr { 1166 Elf32_Word p_type; // Type of segment 1167 Elf32_Off p_offset; // File offset where segment is located, in bytes 1168 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 1169 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 1170 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 1171 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 1172 Elf32_Word p_flags; // Segment flags 1173 Elf32_Word p_align; // Segment alignment constraint 1174 }; 1175 1176 // Program header for ELF64. 1177 struct Elf64_Phdr { 1178 Elf64_Word p_type; // Type of segment 1179 Elf64_Word p_flags; // Segment flags 1180 Elf64_Off p_offset; // File offset where segment is located, in bytes 1181 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 1182 Elf64_Addr p_paddr; // Physical addr of beginning of segment (OS-specific) 1183 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 1184 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 1185 Elf64_Xword p_align; // Segment alignment constraint 1186 }; 1187 1188 // Segment types. 1189 enum { 1190 PT_NULL = 0, // Unused segment. 1191 PT_LOAD = 1, // Loadable segment. 1192 PT_DYNAMIC = 2, // Dynamic linking information. 1193 PT_INTERP = 3, // Interpreter pathname. 1194 PT_NOTE = 4, // Auxiliary information. 1195 PT_SHLIB = 5, // Reserved. 1196 PT_PHDR = 6, // The program header table itself. 1197 PT_TLS = 7, // The thread-local storage template. 1198 PT_LOOS = 0x60000000, // Lowest operating system-specific pt entry type. 1199 PT_HIOS = 0x6fffffff, // Highest operating system-specific pt entry type. 1200 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 1201 PT_HIPROC = 0x7fffffff, // Highest processor-specific program hdr entry type. 1202 1203 // x86-64 program header types. 1204 // These all contain stack unwind tables. 1205 PT_GNU_EH_FRAME = 0x6474e550, 1206 PT_SUNW_EH_FRAME = 0x6474e550, 1207 PT_SUNW_UNWIND = 0x6464e550, 1208 1209 PT_GNU_STACK = 0x6474e551, // Indicates stack executability. 1210 PT_GNU_RELRO = 0x6474e552, // Read-only after relocation. 1211 PT_GNU_PROPERTY = 0x6474e553, // .note.gnu.property notes sections. 1212 1213 PT_OPENBSD_RANDOMIZE = 0x65a3dbe6, // Fill with random data. 1214 PT_OPENBSD_WXNEEDED = 0x65a3dbe7, // Program does W^X violations. 1215 PT_OPENBSD_BOOTDATA = 0x65a41be6, // Section for boot arguments. 1216 1217 // ARM program header types. 1218 PT_ARM_ARCHEXT = 0x70000000, // Platform architecture compatibility info 1219 // These all contain stack unwind tables. 1220 PT_ARM_EXIDX = 0x70000001, 1221 PT_ARM_UNWIND = 0x70000001, 1222 1223 // MIPS program header types. 1224 PT_MIPS_REGINFO = 0x70000000, // Register usage information. 1225 PT_MIPS_RTPROC = 0x70000001, // Runtime procedure table. 1226 PT_MIPS_OPTIONS = 0x70000002, // Options segment. 1227 PT_MIPS_ABIFLAGS = 0x70000003, // Abiflags segment. 1228 }; 1229 1230 // Segment flag bits. 1231 enum : unsigned { 1232 PF_X = 1, // Execute 1233 PF_W = 2, // Write 1234 PF_R = 4, // Read 1235 PF_MASKOS = 0x0ff00000, // Bits for operating system-specific semantics. 1236 PF_MASKPROC = 0xf0000000 // Bits for processor-specific semantics. 1237 }; 1238 1239 // Dynamic table entry for ELF32. 1240 struct Elf32_Dyn { 1241 Elf32_Sword d_tag; // Type of dynamic table entry. 1242 union { 1243 Elf32_Word d_val; // Integer value of entry. 1244 Elf32_Addr d_ptr; // Pointer value of entry. 1245 } d_un; 1246 }; 1247 1248 // Dynamic table entry for ELF64. 1249 struct Elf64_Dyn { 1250 Elf64_Sxword d_tag; // Type of dynamic table entry. 1251 union { 1252 Elf64_Xword d_val; // Integer value of entry. 1253 Elf64_Addr d_ptr; // Pointer value of entry. 1254 } d_un; 1255 }; 1256 1257 // Dynamic table entry tags. 1258 enum { 1259 #define DYNAMIC_TAG(name, value) DT_##name = value, 1260 #include "DynamicTags.def" 1261 #undef DYNAMIC_TAG 1262 }; 1263 1264 // DT_FLAGS values. 1265 enum { 1266 DF_ORIGIN = 0x01, // The object may reference $ORIGIN. 1267 DF_SYMBOLIC = 0x02, // Search the shared lib before searching the exe. 1268 DF_TEXTREL = 0x04, // Relocations may modify a non-writable segment. 1269 DF_BIND_NOW = 0x08, // Process all relocations on load. 1270 DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically. 1271 }; 1272 1273 // State flags selectable in the `d_un.d_val' element of the DT_FLAGS_1 entry. 1274 enum { 1275 DF_1_NOW = 0x00000001, // Set RTLD_NOW for this object. 1276 DF_1_GLOBAL = 0x00000002, // Set RTLD_GLOBAL for this object. 1277 DF_1_GROUP = 0x00000004, // Set RTLD_GROUP for this object. 1278 DF_1_NODELETE = 0x00000008, // Set RTLD_NODELETE for this object. 1279 DF_1_LOADFLTR = 0x00000010, // Trigger filtee loading at runtime. 1280 DF_1_INITFIRST = 0x00000020, // Set RTLD_INITFIRST for this object. 1281 DF_1_NOOPEN = 0x00000040, // Set RTLD_NOOPEN for this object. 1282 DF_1_ORIGIN = 0x00000080, // $ORIGIN must be handled. 1283 DF_1_DIRECT = 0x00000100, // Direct binding enabled. 1284 DF_1_TRANS = 0x00000200, 1285 DF_1_INTERPOSE = 0x00000400, // Object is used to interpose. 1286 DF_1_NODEFLIB = 0x00000800, // Ignore default lib search path. 1287 DF_1_NODUMP = 0x00001000, // Object can't be dldump'ed. 1288 DF_1_CONFALT = 0x00002000, // Configuration alternative created. 1289 DF_1_ENDFILTEE = 0x00004000, // Filtee terminates filters search. 1290 DF_1_DISPRELDNE = 0x00008000, // Disp reloc applied at build time. 1291 DF_1_DISPRELPND = 0x00010000, // Disp reloc applied at run-time. 1292 DF_1_NODIRECT = 0x00020000, // Object has no-direct binding. 1293 DF_1_IGNMULDEF = 0x00040000, 1294 DF_1_NOKSYMS = 0x00080000, 1295 DF_1_NOHDR = 0x00100000, 1296 DF_1_EDITED = 0x00200000, // Object is modified after built. 1297 DF_1_NORELOC = 0x00400000, 1298 DF_1_SYMINTPOSE = 0x00800000, // Object has individual interposers. 1299 DF_1_GLOBAUDIT = 0x01000000, // Global auditing required. 1300 DF_1_SINGLETON = 0x02000000, // Singleton symbols are used. 1301 DF_1_PIE = 0x08000000, // Object is a position-independent executable. 1302 }; 1303 1304 // DT_MIPS_FLAGS values. 1305 enum { 1306 RHF_NONE = 0x00000000, // No flags. 1307 RHF_QUICKSTART = 0x00000001, // Uses shortcut pointers. 1308 RHF_NOTPOT = 0x00000002, // Hash size is not a power of two. 1309 RHS_NO_LIBRARY_REPLACEMENT = 0x00000004, // Ignore LD_LIBRARY_PATH. 1310 RHF_NO_MOVE = 0x00000008, // DSO address may not be relocated. 1311 RHF_SGI_ONLY = 0x00000010, // SGI specific features. 1312 RHF_GUARANTEE_INIT = 0x00000020, // Guarantee that .init will finish 1313 // executing before any non-init 1314 // code in DSO is called. 1315 RHF_DELTA_C_PLUS_PLUS = 0x00000040, // Contains Delta C++ code. 1316 RHF_GUARANTEE_START_INIT = 0x00000080, // Guarantee that .init will start 1317 // executing before any non-init 1318 // code in DSO is called. 1319 RHF_PIXIE = 0x00000100, // Generated by pixie. 1320 RHF_DEFAULT_DELAY_LOAD = 0x00000200, // Delay-load DSO by default. 1321 RHF_REQUICKSTART = 0x00000400, // Object may be requickstarted 1322 RHF_REQUICKSTARTED = 0x00000800, // Object has been requickstarted 1323 RHF_CORD = 0x00001000, // Generated by cord. 1324 RHF_NO_UNRES_UNDEF = 0x00002000, // Object contains no unresolved 1325 // undef symbols. 1326 RHF_RLD_ORDER_SAFE = 0x00004000 // Symbol table is in a safe order. 1327 }; 1328 1329 // ElfXX_VerDef structure version (GNU versioning) 1330 enum { VER_DEF_NONE = 0, VER_DEF_CURRENT = 1 }; 1331 1332 // VerDef Flags (ElfXX_VerDef::vd_flags) 1333 enum { VER_FLG_BASE = 0x1, VER_FLG_WEAK = 0x2, VER_FLG_INFO = 0x4 }; 1334 1335 // Special constants for the version table. (SHT_GNU_versym/.gnu.version) 1336 enum { 1337 VER_NDX_LOCAL = 0, // Unversioned local symbol 1338 VER_NDX_GLOBAL = 1, // Unversioned global symbol 1339 VERSYM_VERSION = 0x7fff, // Version Index mask 1340 VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version) 1341 }; 1342 1343 // ElfXX_VerNeed structure version (GNU versioning) 1344 enum { VER_NEED_NONE = 0, VER_NEED_CURRENT = 1 }; 1345 1346 // SHT_NOTE section types 1347 enum { 1348 NT_FREEBSD_THRMISC = 7, 1349 NT_FREEBSD_PROCSTAT_PROC = 8, 1350 NT_FREEBSD_PROCSTAT_FILES = 9, 1351 NT_FREEBSD_PROCSTAT_VMMAP = 10, 1352 NT_FREEBSD_PROCSTAT_GROUPS = 11, 1353 NT_FREEBSD_PROCSTAT_UMASK = 12, 1354 NT_FREEBSD_PROCSTAT_RLIMIT = 13, 1355 NT_FREEBSD_PROCSTAT_OSREL = 14, 1356 NT_FREEBSD_PROCSTAT_PSSTRINGS = 15, 1357 NT_FREEBSD_PROCSTAT_AUXV = 16, 1358 }; 1359 1360 // Generic note types 1361 enum : unsigned { 1362 NT_VERSION = 1, 1363 NT_ARCH = 2, 1364 NT_GNU_BUILD_ATTRIBUTE_OPEN = 0x100, 1365 NT_GNU_BUILD_ATTRIBUTE_FUNC = 0x101, 1366 }; 1367 1368 // Core note types 1369 enum : unsigned { 1370 NT_PRSTATUS = 1, 1371 NT_FPREGSET = 2, 1372 NT_PRPSINFO = 3, 1373 NT_TASKSTRUCT = 4, 1374 NT_AUXV = 6, 1375 NT_PSTATUS = 10, 1376 NT_FPREGS = 12, 1377 NT_PSINFO = 13, 1378 NT_LWPSTATUS = 16, 1379 NT_LWPSINFO = 17, 1380 NT_WIN32PSTATUS = 18, 1381 1382 NT_PPC_VMX = 0x100, 1383 NT_PPC_VSX = 0x102, 1384 NT_PPC_TAR = 0x103, 1385 NT_PPC_PPR = 0x104, 1386 NT_PPC_DSCR = 0x105, 1387 NT_PPC_EBB = 0x106, 1388 NT_PPC_PMU = 0x107, 1389 NT_PPC_TM_CGPR = 0x108, 1390 NT_PPC_TM_CFPR = 0x109, 1391 NT_PPC_TM_CVMX = 0x10a, 1392 NT_PPC_TM_CVSX = 0x10b, 1393 NT_PPC_TM_SPR = 0x10c, 1394 NT_PPC_TM_CTAR = 0x10d, 1395 NT_PPC_TM_CPPR = 0x10e, 1396 NT_PPC_TM_CDSCR = 0x10f, 1397 1398 NT_386_TLS = 0x200, 1399 NT_386_IOPERM = 0x201, 1400 NT_X86_XSTATE = 0x202, 1401 1402 NT_S390_HIGH_GPRS = 0x300, 1403 NT_S390_TIMER = 0x301, 1404 NT_S390_TODCMP = 0x302, 1405 NT_S390_TODPREG = 0x303, 1406 NT_S390_CTRS = 0x304, 1407 NT_S390_PREFIX = 0x305, 1408 NT_S390_LAST_BREAK = 0x306, 1409 NT_S390_SYSTEM_CALL = 0x307, 1410 NT_S390_TDB = 0x308, 1411 NT_S390_VXRS_LOW = 0x309, 1412 NT_S390_VXRS_HIGH = 0x30a, 1413 NT_S390_GS_CB = 0x30b, 1414 NT_S390_GS_BC = 0x30c, 1415 1416 NT_ARM_VFP = 0x400, 1417 NT_ARM_TLS = 0x401, 1418 NT_ARM_HW_BREAK = 0x402, 1419 NT_ARM_HW_WATCH = 0x403, 1420 NT_ARM_SVE = 0x405, 1421 NT_ARM_PAC_MASK = 0x406, 1422 1423 NT_FILE = 0x46494c45, 1424 NT_PRXFPREG = 0x46e62b7f, 1425 NT_SIGINFO = 0x53494749, 1426 }; 1427 1428 // LLVM-specific notes. 1429 enum { 1430 NT_LLVM_HWASAN_GLOBALS = 3, 1431 }; 1432 1433 // GNU note types 1434 enum { 1435 NT_GNU_ABI_TAG = 1, 1436 NT_GNU_HWCAP = 2, 1437 NT_GNU_BUILD_ID = 3, 1438 NT_GNU_GOLD_VERSION = 4, 1439 NT_GNU_PROPERTY_TYPE_0 = 5, 1440 }; 1441 1442 // Property types used in GNU_PROPERTY_TYPE_0 notes. 1443 enum : unsigned { 1444 GNU_PROPERTY_STACK_SIZE = 1, 1445 GNU_PROPERTY_NO_COPY_ON_PROTECTED = 2, 1446 GNU_PROPERTY_AARCH64_FEATURE_1_AND = 0xc0000000, 1447 GNU_PROPERTY_X86_FEATURE_1_AND = 0xc0000002, 1448 GNU_PROPERTY_X86_ISA_1_NEEDED = 0xc0008000, 1449 GNU_PROPERTY_X86_FEATURE_2_NEEDED = 0xc0008001, 1450 GNU_PROPERTY_X86_ISA_1_USED = 0xc0010000, 1451 GNU_PROPERTY_X86_FEATURE_2_USED = 0xc0010001, 1452 }; 1453 1454 // aarch64 processor feature bits. 1455 enum : unsigned { 1456 GNU_PROPERTY_AARCH64_FEATURE_1_BTI = 1 << 0, 1457 GNU_PROPERTY_AARCH64_FEATURE_1_PAC = 1 << 1, 1458 }; 1459 1460 // x86 processor feature bits. 1461 enum : unsigned { 1462 GNU_PROPERTY_X86_FEATURE_1_IBT = 1 << 0, 1463 GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1 << 1, 1464 1465 GNU_PROPERTY_X86_ISA_1_CMOV = 1 << 0, 1466 GNU_PROPERTY_X86_ISA_1_SSE = 1 << 1, 1467 GNU_PROPERTY_X86_ISA_1_SSE2 = 1 << 2, 1468 GNU_PROPERTY_X86_ISA_1_SSE3 = 1 << 3, 1469 GNU_PROPERTY_X86_ISA_1_SSSE3 = 1 << 4, 1470 GNU_PROPERTY_X86_ISA_1_SSE4_1 = 1 << 5, 1471 GNU_PROPERTY_X86_ISA_1_SSE4_2 = 1 << 6, 1472 GNU_PROPERTY_X86_ISA_1_AVX = 1 << 7, 1473 GNU_PROPERTY_X86_ISA_1_AVX2 = 1 << 8, 1474 GNU_PROPERTY_X86_ISA_1_FMA = 1 << 9, 1475 GNU_PROPERTY_X86_ISA_1_AVX512F = 1 << 10, 1476 GNU_PROPERTY_X86_ISA_1_AVX512CD = 1 << 11, 1477 GNU_PROPERTY_X86_ISA_1_AVX512ER = 1 << 12, 1478 GNU_PROPERTY_X86_ISA_1_AVX512PF = 1 << 13, 1479 GNU_PROPERTY_X86_ISA_1_AVX512VL = 1 << 14, 1480 GNU_PROPERTY_X86_ISA_1_AVX512DQ = 1 << 15, 1481 GNU_PROPERTY_X86_ISA_1_AVX512BW = 1 << 16, 1482 GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS = 1 << 17, 1483 GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW = 1 << 18, 1484 GNU_PROPERTY_X86_ISA_1_AVX512_BITALG = 1 << 19, 1485 GNU_PROPERTY_X86_ISA_1_AVX512_IFMA = 1 << 20, 1486 GNU_PROPERTY_X86_ISA_1_AVX512_VBMI = 1 << 21, 1487 GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2 = 1 << 22, 1488 GNU_PROPERTY_X86_ISA_1_AVX512_VNNI = 1 << 23, 1489 1490 GNU_PROPERTY_X86_FEATURE_2_X86 = 1 << 0, 1491 GNU_PROPERTY_X86_FEATURE_2_X87 = 1 << 1, 1492 GNU_PROPERTY_X86_FEATURE_2_MMX = 1 << 2, 1493 GNU_PROPERTY_X86_FEATURE_2_XMM = 1 << 3, 1494 GNU_PROPERTY_X86_FEATURE_2_YMM = 1 << 4, 1495 GNU_PROPERTY_X86_FEATURE_2_ZMM = 1 << 5, 1496 GNU_PROPERTY_X86_FEATURE_2_FXSR = 1 << 6, 1497 GNU_PROPERTY_X86_FEATURE_2_XSAVE = 1 << 7, 1498 GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT = 1 << 8, 1499 GNU_PROPERTY_X86_FEATURE_2_XSAVEC = 1 << 9, 1500 }; 1501 1502 // AMDGPU-specific section indices. 1503 enum { 1504 SHN_AMDGPU_LDS = 0xff00, // Variable in LDS; symbol encoded like SHN_COMMON 1505 }; 1506 1507 // AMD specific notes. (Code Object V2) 1508 enum { 1509 // Note types with values between 0 and 9 (inclusive) are reserved. 1510 NT_AMD_AMDGPU_HSA_METADATA = 10, 1511 NT_AMD_AMDGPU_ISA = 11, 1512 NT_AMD_AMDGPU_PAL_METADATA = 12 1513 }; 1514 1515 // AMDGPU specific notes. (Code Object V3) 1516 enum { 1517 // Note types with values between 0 and 31 (inclusive) are reserved. 1518 NT_AMDGPU_METADATA = 32 1519 }; 1520 1521 enum { 1522 GNU_ABI_TAG_LINUX = 0, 1523 GNU_ABI_TAG_HURD = 1, 1524 GNU_ABI_TAG_SOLARIS = 2, 1525 GNU_ABI_TAG_FREEBSD = 3, 1526 GNU_ABI_TAG_NETBSD = 4, 1527 GNU_ABI_TAG_SYLLABLE = 5, 1528 GNU_ABI_TAG_NACL = 6, 1529 }; 1530 1531 constexpr const char *ELF_NOTE_GNU = "GNU"; 1532 1533 // Android packed relocation group flags. 1534 enum { 1535 RELOCATION_GROUPED_BY_INFO_FLAG = 1, 1536 RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG = 2, 1537 RELOCATION_GROUPED_BY_ADDEND_FLAG = 4, 1538 RELOCATION_GROUP_HAS_ADDEND_FLAG = 8, 1539 }; 1540 1541 // Compressed section header for ELF32. 1542 struct Elf32_Chdr { 1543 Elf32_Word ch_type; 1544 Elf32_Word ch_size; 1545 Elf32_Word ch_addralign; 1546 }; 1547 1548 // Compressed section header for ELF64. 1549 struct Elf64_Chdr { 1550 Elf64_Word ch_type; 1551 Elf64_Word ch_reserved; 1552 Elf64_Xword ch_size; 1553 Elf64_Xword ch_addralign; 1554 }; 1555 1556 // Node header for ELF32. 1557 struct Elf32_Nhdr { 1558 Elf32_Word n_namesz; 1559 Elf32_Word n_descsz; 1560 Elf32_Word n_type; 1561 }; 1562 1563 // Node header for ELF64. 1564 struct Elf64_Nhdr { 1565 Elf64_Word n_namesz; 1566 Elf64_Word n_descsz; 1567 Elf64_Word n_type; 1568 }; 1569 1570 // Legal values for ch_type field of compressed section header. 1571 enum { 1572 ELFCOMPRESS_ZLIB = 1, // ZLIB/DEFLATE algorithm. 1573 ELFCOMPRESS_LOOS = 0x60000000, // Start of OS-specific. 1574 ELFCOMPRESS_HIOS = 0x6fffffff, // End of OS-specific. 1575 ELFCOMPRESS_LOPROC = 0x70000000, // Start of processor-specific. 1576 ELFCOMPRESS_HIPROC = 0x7fffffff // End of processor-specific. 1577 }; 1578 1579 } // end namespace ELF 1580 } // end namespace llvm 1581 1582 #endif // LLVM_BINARYFORMAT_ELF_H 1583